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LOCKFILL is a quick tool developed by Deltares, enabling the assessment of a shipping lock's performance, in terms of levelling times, forces on vessels and flow velocities on the approach harbour bed.

LOCKFILL computes the longitudinal forces on the ship which are caused by translatory waves, momentum variation, skin friction, the filling jet and a water density difference, based on a one-dimensional approach. The program allows the calculation of various filling and emptying systems in the heads of the lock, e.g. openings in the lock gates, pipes through the gates fitted with butterfly valves, lifting gates or short culverts in the lock head walls. Read more.

The software has a graphical user interface allowing easy input manipulation and showing the computation results in graphs and key indicators. Alternatively, the program can be run in command line.

On this portal you can find the program, its manual and relevant documentation.


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LOCKFILL course June 14th

We will be organizing the second LOCKFILL course on June 14th (during the Dutch Delft Software Days). This course introduces the background of LOCKFILL and the graphical user interface by some hands-on practice. More information can be found here.

More Blog Entries

Lockfill 5.2 released with new features

Per request of several users of Lockfill the levelling system of a lift gate with stilling...

License update

The current Lockfill license has expired (since May 1st). A new version of Lockfill containing...




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